Embroidering-machine.



J. A. GROEBLI.

' EMRmnVEmNQMAcmNE. APPLICATION FILED [5I-IB. 9' I9I5.

Patented Jan. 4, 1916.

70W a. i

J. A. GROEBLI.

EMBROIDERING lvlAcHlNEl APPLICATION FILED FEB- 9, 1915.

Patented Jan.4,1916.

2 SHEETS-SHEET 2.

ITTTTTIIIH illilulllillllllllllll IHTTYTIIHIIIIIIHHIHIun ll JosEPrrA. anoniem, or NEW Yoan, n. Y.

i nMBnoInnaiNe-Mncnnvn.

' Application led February 9,119.15.V Serial'No. 7,103.

To all whom'z'tmag/ concer-n.'

Beit known that I, JOSEPH A. GROEBLI, a

citizen of the United States, and a resident nism, step by step intov different positions in a vertical plane to successively present the fabric in the selected stitch positions before the needles, while the fabric isperiodically shifted in its position in the frame, as by rolling it from one roller to another, so as to bring forward new portions to -be em- In embroidering a pattern in an automatic Vmachineof the character mentioned, it is customary for the workman, afterthe fabric has been properly 'shifted byrrolling. it from one fabric roller to another, to begin at the top of the ligure to be embroidered and work down, gradually raising the tambour frame, so that the embroidering is finished at the bottom of the figure, and hence at a point nearest to the top of the next iigure to be embroidered. This results in bringing the tambour frame into an velevated position, from which it must be brought down` beforeI beginning work on Vthel 'nextfigure of the embroidery. 'If'now the tambour frame is lowered, the embroideringi` threads which are still attached to the fabric will be drawn out from the needles and shuttles to an eXtent equal to the distancev thetambour frame is lowered, while if the fabric is iirst wound up from a'lower to an upper roller, before the tambour frame is lowered, the threads will also be drawnv out as much as the fabric is rolled up. And, in

-x either case, when the following1 movementof rolling the fabric or llowering the tambour frame is' completed and the fabric is brought back to approximately itslast position relai tivevto the needles,r the threads which have been drawn out as, mentioned above will remain slack and loose, the slack not onlybeing wasted but also interfering with the neat and accurate Vcommencement f of the next gure. Y Y

A.My presentinvention isdirected to means tuatingthe fabric rollers.l

Specification of Letters Patent. l Patgntgd Jn. 4, 1916.1. l

whereby the fabric Shan be renee@ gmini taneously with the lowering of the tambour frame and at substantially the'same .rate of speed;v so that the fabric shall' retain substantially the same position relative 'to the A needles (allowance being made, of course, f

for .theI proper distance between the com pleted figure and the next), and urmecesl sary slack and waste'of the threads will ibeavoided, while time willbe saved by: performing the two operations, of reeling the fabric and adjusting the tambour frame simultaneously. n i A.

In the drawings, Figure l isa front elevation ofan*A enibroidering machine, i'n which, fory simplicity, the various stitching devices are omitted, ybut which shows my new method of, connecting'the reeling ap paratus with the tambour frame'actuating mechanism, portions of the mechanism being broken-away for clear-ness; F ig. 2 is a plan view, showing particularly the mechanism connecting the reeling devices andthe tam# bour frame actuating mechanism, parts being broken away to make theeonstruction clearer; Fig. 3 is' an elevation takenv at right angles to Fig'.y li: and looking fromdeftto" i right at the lower part of the aforesaidcon-L necting mechanism; and Fig. 4 is a detail ofthe worm and worm gear mechanism acon an enlarged scale.

Similar referencefnumerals designate corresponding parts in all the figures.

The automatic'-mechanism 'ein lo edto P shiftthetamborrA frame may be of a Achar- Figs-3 and lare acter well known in the art,1as, for instance,

that shown in Letters Patent of the United.,

States, issued tome November 6,1894:, and

numbered 528,632, and for-thatfreason-I have, not illustrated such mechanismin de tail, and I .will explain' the application of;

connected with the'mechanism illustra-ted'in that patent, theshaft 39 ofthe present draw; ings y corresponding with the shaft shown' in said atent as car-rT ino` the inionVV D18,

my present invention ,by considering; itQas, l

It isthrough this shaft that the movements of the tambour frame `are controlled x by hanches explainedin said patent. f

f ik 's'the frame of the vmachineg is terbalanced'so as to'move freely in a verticalplane, in the way well known 1n the-art,

under the influence of lthe jacquard mecha v the tambour vframe!mounted therein and counnism. Fabric rollers,shown as twopairs,`

3, i; are journaled in the tambour frame, and carry worm gears 5, 5 and 6, 6, driven by worms 7, 7 and 8, 8 upon the vertical shafts 9 and 10, respectively, which, in turn, are respectively pro-vided with worm gears 11 and 12, meshing with worms 13 and le on shaft 15, driven through knuckle lioint 16, sleeve joint 17 and knuckle jointl 18, shaft 19, bevel gears 20, 21 or 22, clutch or 24 on shaft 25 and gears 26, 27, by the motor 28. By this means the upper and lower fabric rollers of each pair are rotated simultaneously and uniformly, the direction of movement depending upon which of the clutches 28 or 2% is made to engage with a beveled gear 21 or 22 which gears are idle upon the shaft 25 except when engaged by their respective clutches, splined to shaft Upon the shaft 19 is mounted a sprocket wheel 29, carrying a chain traveling around a similar sprocket wheel 31 mounted upon a shaft 32,'journaled at one end in a swiveled bearing 33 upon the frame of the machine, and, toward its other end.l in an arm 34C pivoted at 35 in a pivoted bearing and held back by a spring 36 into a position determined as by a suitable stop as 37. Upon the end of the shaft'82 is a worm 88.

I have shown the shaft 89, which as already mentioned, corresponds with the shaft shown in my Patent No. 528,682 as carrying the gear D18, as extended upward somewhat and as carrying a` worm gear 40 adapted to mesh with the worm 88. rl`he shaft 39 is also provided with a handle 41 which is identical with the handle D20 of said patent. It will be seen, therefore, that, by means of the' sprocket wheels 29, 81 and chain 30, the shaft 32 may be made to revolve at the same speed as the shaft 19, and if the worm 38 is brought into mesh with the worm gear 40, the shaft 39 may be made to revolve simultaneously with the rollers 3, e, and at the same 'speed if vthat is desired, or at such relative speed as may be established by the pitch and size of the respective worms and worm gears.

In practice, when it is desired to lower the tambour frame and reel the fabric, the shaft 39 is first swung into position and lowered to bring its gear D18 into mesh with the gears D9 and yD1G of said patent, so that the rotation of said gear D18 will cause the tambour frame to move vertically. The arm Set is then drawn over, against the resistance of the spring 36, so as to bring the worm 38 into mesh with the worm gear 40, and, the motor being put in operation, the fabric rollers will be turned to reel the fabric to the desired extent, while simultaneously the tambour frame will be moved in the reverse direction, the gearing intermediate shafts 19 and 39 being so arranged that the relative movement of the fabric rollers and tambour frame shall be as described.

Obviously, the movement of the fabric rollers may be initiated before the worm 38 is thrown into mesh with the worm gear 40, and it may be continued after the worm and gear have been disconnected, and special adjustments of the tambour frame may be made manually by the use of the crank 41, the arrangement whereby the roller operating and the tambour frame operating mechanisms are, optionally, connected or disconnected allowing them to be worked together or independently as may be desired.

I have illustrated the connection between the two mechanisms last mentioned as being made by means of sprocket wheels, a chain and a swinging shaft. But, of course, it will be understood that other well known mechanical equivalents for transmitting motion may be used instead of these elements, the important thing being that the movement of the roller driving mechanism shall be communicated to the tambour frame adjusting mechanism at a suitable rate of speed and so as to be readily applied to or detached therefrom.

Having thus described my invention, what I claim and desire to secure by Letters Patent of the United States is 1. The combination, in an embroidering machine of a tambour frame provided with fabric carriers, means for actuating the fabric carriers t0 shift the fabric, lleans for actuating the tambour frame in a direction reverse to the shift of the fabric, and intermediate means for causing the carrier actuating means to govern the movement of the tambour frame actuating means.

2. The combination, in an embroidering machine of a tambour frame provided with fabric carriers, means for actuating the fabric carriers to transfer fabric from one to another, means for moving the tambour frame vertically and intermediate means for detachably connecting the fabric carrier actuating means with the tambour frame mov'- ing means.

3. The combination, in an embroidering machine, of a tambour frame, fabric transferring means mounted therein, and interconnected means for moving the tambour fra-me and fabric transferring means relatively and simultaneously in opposite directions in the same line.

4i. The combination, in an embroidering machine, of a tambour frame, fabric transferring means mounted therein and optionally interconnectible means for moving the tambour frame and fabric transferring means relatively and simultaneously, soV as to return the tambour frame each time to the same initial position coincidently with the shifting of the fabric.

5. The combination, in an embroidering machine, of a tambour frame, fabric transferring means mounted therein, interconn nectable means for causing the fabric transferring means to shift the fabric in one direction While the tambour frame is returned in the opposite direction to an initial position.

6. The combination, in an embroidering machine, of a tambour frame, means for supporting a fabric thereon, and common means for shifting the fabric in one direction in the frame and simultaneously returning the frame in an opposite direction to an initial position.

7. The combination, vin an embroidering machine, of a tambour frame, means embodying carrying rollers for shifting a fabric vertically thereon, means for moving the tambour frame vertically and disconnectible, common means for simultaneously causing the rollers to shift the fabric in one direction while the tambour frame is shifted in the opposite direction.

8. The combination, is an embroidering machine, of a tambour frame, means embodying carrying rollers for shifting a fabric vertically thereon, means for moving the tambour frame vertically and disconnectible, common means for simultaneously causing the rollers to shift the fabric in one direction While the tambour frame is shifted in the opposite direction at substantially the same rate of speed. n

9. The combination, in an embroidering machine, of a tambour frame, fabric rollers mounted thereon, a driving shaft for actuating said rollers, means for moving the tambour frame` vertically, a shaft governing said latter means, and gearing intermediate the said shafts for transmitting motiony from the'former to the latter.

l0. The combination, in an embroidering machine, of a tambour frame, fabric rollers mounted thereon, a driving shaft for actuating said rollers, means for moving the tambour frame vertically, a shaft governing said latter means, and gearing intermediate the said shafts and embracing sprockets, a

chain, a swingable shaft, a Worm and Worm gear for transmitting the motion from one shaft to the other. l'

' JOSEPH A. GROEBLI.

lVitnesses:

GEORGE E. BROWN, A AGNES GERHAUSER.

Copies of this patent may be obtained for ve cents each, vby addressing thevCmm1s.sioner of Patents. Washington, D. C. 

